Color of Noise



Overview and implementing of noise function focused on its power spectrum.

White noise


The power spectral density is equivalent to $\large \frac{1}{f^0}$, which is constant.

Pink noise


The power spectral density is equivalent to $\large \frac{1}{f}$, which decreases 3 dB per octave.

Brown noise


The power spectral density is equivalent to $\large \frac{1}{f^2}$, which decreases 6 dB per octave.

Blue noise


The power spectral density is equivalent to $\large f$, which increases 3 dB per octave.

Violet noise


The power spectral density is equivalent to $\large f^2$, which increases 6 dB per octave.

The colours of noise